Class Hexachord

Guidonian hexachords: the syllable of a note in each hexachord, and mutation between them.

Index

Constructors

Properties

DURUM MOLLE NATURALE

Methods

getNotes getSyllable mutate

Constructors

constructor

new Hexachord(): Hexachord
Returns Hexachord

Properties

`Static` `Readonly`DURUM

DURUM: string[] = HEXACHORD_DEFS.durum.notes

Hexachordum durum, G to E, with B natural.

`Static` `Readonly`MOLLE

MOLLE: string[] = HEXACHORD_DEFS.molle.notes

Hexachordum molle, F to D, with B flat.

`Static` `Readonly`NATURALE

NATURALE: string[] = HEXACHORD_DEFS.naturale.notes

Hexachordum naturale, C to A: ['C', 'D', 'E', 'F', 'G', 'A'].

Methods

`Static`getNotes

getNotes(hexachord: HexachordType): Note[]
Returns all notes of a hexachord as Note objects (in octave 4).
Parameters
- hexachord: HexachordType
Returns Note[]
- Defined in hexachord.ts:86

`Static`getSyllable

getSyllable(note: Note, hexachord: HexachordType): HexachordSyllable | null
Returns the Guidonian solfège syllable for a note within a hexachord. Returns null if the note is not part of the specified hexachord.
Parameters
- note: Note
- hexachord: HexachordType
Returns HexachordSyllable | null
- Defined in hexachord.ts:51

`Static`mutate

mutate(
    fromHex: HexachordType,
    toHex: HexachordType,
    sharedNote: Note,
): { fromSyllable: HexachordSyllable; toSyllable: HexachordSyllable } | null
Finds a shared note (mutation point) for transitioning between two hexachords. Returns the syllable assignment in both hexachords, or null if no mutation is possible.
Parameters
- fromHex: HexachordType
- toHex: HexachordType
- sharedNote: Note
Returns { fromSyllable: HexachordSyllable; toSyllable: HexachordSyllable } | null
- { fromSyllable: HexachordSyllable; toSyllable: HexachordSyllable }
  - fromSyllable: HexachordSyllable
    Syllable of the shared note in the hexachord left.
  - toSyllable: HexachordSyllable
    Syllable of the same note in the hexachord entered.
- null
- Defined in hexachord.ts:67